/*
 * @Author: humengchuan 531537052@qq.com
 * @Date: 2024-02-21 18:05:34
 * @LastEditors: humengchuan 531537052@qq.com
 * @LastEditTime: 2024-06-27 17:01:54
 * @FilePath: \project\node-project\server\app.js
 * @Description: 
 */
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const JWT = require('./util/JWT')

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

const adminRouter = require('./routes/admin/UserRouter');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);


/* webpage - api */ 

/*
  * token验证中间件拦截 
*/ 
app.use((req, res, next) => {
  if (req.url !=='/admin/user/login' && req.url !=='/users/api/register') {
    if (req.headers.authorization) {
      const token = req.headers.authorization.split(' ')[1]
      if(token) {
        const tokenInfo = JWT.verify(token)
        if (tokenInfo) {
          // 在使用过程中更新token时间
          const newToken = JWT.generate({
            _id: tokenInfo._id,
            username: tokenInfo.username
          }, '2h')
          res.header('Authorization', newToken)
          next()
        } else {
          res.status(401).send({
            code: 401,
            msg: 'token过期'
          })
        }
      }
   }else{
    res.status(401).send({
      code: 401,
      msg: 'token不存在'
    })
   }
  } else {
    next()
  }
})


/* admin - api */
app.use(adminRouter)


// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
